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Main Appliciation

LM series Vertical roller mill and suitable for grinding quartz,calcite, talcum and other non-flammable burst materials whose Mohs hardness are below 9.3.

LM series vertical roller mill

LM series vertical grinding mill

Vertical roller mill in the production of a variety of materials, with a smooth running, high efficiency grinding, processing capacity and other advantages, these advantages benefit from the good coordination of its internal parts, but the life of the accessories is limited, for the liner , It is in the process of using the need to be replaced, then you need to purchase new accessories, the procurement process, how to choose suitable for vertical roller mill liner?

Vertical Roller Mill Liner

In the grinding composition of the material, the role of the liner is to extend the use of the main mill time, so we work at the time, you can use different forms of liner to adjust the movement of the grinding body, and enhance the crushing of the material from This point of view, for the choice of liner, will greatly affect the vertical roller mill grinding efficiency and production, we in the choice of time, need to pay attention to its material, good material can make it have a better life, This is a good help for the production, and now the market is generally choose high-chromium cast iron, high-chromium cast steel and high manganese steel and other materials to produce the material, with good life; Is the type of vertical roller mill on the size of the model, so when the choice of liner, it should also match the model, if the production liner damage, then the original manufacturers to purchase, if the conditions are not allowed, it must ensure that the model Match, the other is to pay attention to the quality of the problem. Before installation, you need to clean up the debris inside the main grinding machine; installation, should follow the instructions, and the direction of the mill with the nesting; installed, should be tightened and other comprehensive inspection to ensure that not There are installation problems; mainly describes the selection criteria for vertical roller mill liner, mainly the material, quality and model of the problem, which several aspects of the use of the latter has a major impact, so choose to be careful, the above for these points The introduction is also more detailed, and then analyzed the installation process, hoping to help you better use the components.

LM Series vertical roller mill is an advanced grinding machine, which integrated with drying, milling, grading and transporting. It is the high standard mill which can meet the high capacity of powder producing request. LM vertical grinding mill is widely used in cement, powder station, metallurgy, chemical and non-metal industry. It adopts reliable structure and reasonable process flow, integrated with drying, milling, classifier, and elevator. Especially, it can fully meets the requirement of clients in the high production of powder and its main technical and economy indicator reaches the international level.

LM series vertical roller mill is the newest grinding machine, which integrates the advanced international technology and years of rich experience. It is ideal equipment that integrates crushing, drying, grinding and grading conveyor all together. For those mining investors who want to get a cheap price and cost of mining grinder, Zenith's LM series vertical roller mill can meet their particular requirements.

Product advantages

  • The whole plant is a vertical structure of strong systematic characteristic, so it occupies small area. From the crushing of raw material to grinding and packing is an independent production system. Compared with other milling plants, its passing ratio achieves 99%, this is what other mill cannot reach.
  • Driving system of main frame adopts airtight gearing and pulley, drives smoothly and operates reliably. The electric control system is centralized controlled, so the automaticity is high, no people are needed in the operating room.
  • Its automatic control system can reach remote control, which is easy to operate; there is the device to prevent roller sleeve contact with disc liner directly, and avoid the destructive impact and severe vibration; we can turn the rotating arm by repairing fuel tank, replace the roller and liner are more convenient, which can reduce the downtime.
  • It features small vibration, low noise, and sealing device as a whole, and the system also works with no pressure and dust spills.

Repair method

  1. each bearing are using a No. 1 MOS2 grease or ZM - 2 sodium grease lubrication, roller bearing refueling once every two classes, the host bearing refueling once every four classes, blower bearings refueling once every month. Bearing temperature rise to a maximum of 70 degrees Celsius, was found to be breaking the bearing overheated bearings and bearing chamber cleaning accessories such as cleaning once.
  2. if the head of the rivet is worn impeller, the impeller body by pressing and welding with the welding of the hub, so that the wear of the head of the rivet back to the normal state.
  3. the rivet hole prone to fatigue cracks, the entire root available unused new electrode welding repair cracks, but at the center of symmetry axis impeller carried the rest of the crack at the welding electrode to stay in the area, and then a new welding repair cracks symmetrical rivet holes, as long as the rest of the electrodes when welding finished with symmetrical rivet repair the rest of the electrodes, welding up to ensure equal weight

Technical Data

LM Vertical Grinding Mill
Model LM
Wheel diameter(mm) 1300 1500 1700 1900 2200 1300 1500 1700 1900 2200 1300 1500 1700 1900 2200
Output (th) 10-30 13-40 18-57 23-72 36-110 10-15 16-22 20-28 26-35 35-50 5-14 7-20 8-27 9-30 18-55
Finish fineness µm 170-45 170-45 170-45 170-45 170-45   170-45 170-45 170-45 170-45 170-45
Mesh 80-325 80-325 80-325 80-325 80-325   80-325 80-325 80-325 80-325 80-325
Coal powder fineness (R0.08) 5-20% 5-20% 5-20% 5-20% 5-20%  
Coal powder moisture (%) <1% <1% <1% <1% <1%
End product moisture (%) ≤1% ≤1% ≤1% ≤1% ≤1% ≤1% ≤1% ≤1% ≤% ≤1%
Grinding material particle size D80 (mm) <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10
Grinding material max feed size(mm) <38 <40 <42 <45 <50 <38 <40 <42 <45 <50 <38 <40 <42 <45 <50
Moisture of grinding material not to dry (%) <4% <4% <4% <4% <4% <4% <4% <4% <4% <4%
Matieral moisture of into mill (%) <15% <15% <15% <15% <15%
Moisture of grinding material need to dry (%) 4%-15% 4%-15% 4%-15% 4%-15% 4%-15% 4%-15% 4%-15% 4%-15% 4%-15% 4%-15%
Into mill air temperature (℃) <350 <350 <350 <350 <350 <350 <350 <350 <350 <350 <350 <350 <350 <350 <350
Out of the mill air temperature (℃) 70-95 70-95 70-95 70-95 70-95 75-95 75-95 75-95 75-95 75-95 70-95 70-95 70-95 70-95 70-95
Raw coal hardgrove grindability index (HGI) >55 >55 >55 >55 >55
Main motor power (kw) 200 280 400 500 800 185 250 315 400 500 200 280 400 500 800
Contour dimension Length (mm) 5520 6550 7170 7580 8080 5520 6550 7170 7580 8080 5520 6550 7170 7580 8080
Width (mm) 2500 3070 3460 3320 4660 2500 3070 3460 3320 6700 2500 3070 3460 3320 4660
Height (mm) 7060 7560 8300 8960 9020 7060 7560 8300 8960 9020 7060 7560 8300 8960 9020